content: package com.alipay.easysdk.kms.aliyun.credentials.utils;
  
  import com.alipay.easysdk.kms.aliyun.credentials.ICredentials;
  
  import javax.crypto.Mac;
  import javax.crypto.spec.SecretKeySpec;
  import java.io.UnsupportedEncodingException;
  import java.security.InvalidKeyException;
  import java.security.NoSuchAlgorithmException;
  
  public class HmacSHA1Signer {
      public static final String ENCODING = "UTF-8";
      private static final String ALGORITHM_NAME = "HmacSHA1";
  
      public static String signString(String stringToSign, ICredentials credential) {
          return signString(stringToSign, credential.getAccessKeySecret());
      }
  
      public static String signString(String stringToSign, String accessKeySecret) {
          try {
              Mac mac = Mac.getInstance(ALGORITHM_NAME);
              mac.init(new SecretKeySpec(accessKeySecret.getBytes(ENCODING), ALGORITHM_NAME));
              byte[] signData = mac.doFinal(stringToSign.getBytes(ENCODING));
              return Base64Utils.encode(signData);
          } catch (NoSuchAlgorithmException e) {
              throw new IllegalArgumentException(e.toString());
          } catch (UnsupportedEncodingException e) {
              throw new IllegalArgumentException(e.toString());
          } catch (InvalidKeyException e) {
              throw new IllegalArgumentException(e.toString());
          }
      }
  
      public static String getSignerName() {
          return "HMAC-SHA1";
      }
  
      public static String getSignerVersion() {
          return "1.0";
      }
  }
  